User Manual PLC-3 BACKUP CONC(OR.DU1 Owner's manual

Installing a Backup System
Chapter 2
2-11
Selecting a Backup Cable
Choose a backup cable for the switchover method desired. Table 2.C lists
the choices. See Figure 2.9 through Figure 2.11 for wiring information.
Table 2.C
Backup
Cables
Switchover Method: Backup Cable:
Automatic switchover with no switchback 1775CBA
Automatic switchover with controllable switchback 1775CBB
1
1775CM
2
Manual switchover 1775CBB
1. Use for scanner backup configuration.
2. Use for MX backup configuration.
Figure 2.9
Backup
Cable W iring for Scanner Backup with Automatic Switchover
with No Switchback (Cat. No. 1775CBA)
1
3
2
4
5
6
1
3
2
4
5
6
1775CBA
BACKUP
CABLE
SCANNER #1
BACKUP
CONNECTOR
SCANNER #1
BACKUP
CONNECTOR
PRIMARY
PROCESSOR
BACKUP
PROCESSOR
SHIELD
10976I